stack::size
返回的元素数目在堆栈中。
size_type size( ) const;
返回值
当前堆栈的长度。
示例
// stack_size.cpp
// compile with: /EHsc
#include <stack>
#include <iostream>
int main( )
{
using namespace std;
stack <int> s1, s2;
stack <int>::size_type i;
s1.push( 1 );
i = s1.size( );
cout << "The stack length is " << i << "." << endl;
s1.push( 2 );
i = s1.size( );
cout << "The stack length is now " << i << "." << endl;
}
要求
页眉: <堆栈>
命名空间: std